Happy Wednesday!
Bellwork: February 25
In your own words DEFINE the word
“Tropism”.
Give examples of what the following four
tropisms may look like in a plant’s “real life”
(remember the video from Monday)
Gravitropism (+/-) , Hydrotropism,
Phototropism, Thigmotropism
Grade Info
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No tutorials today!
Iwill take work until Friday afternoon
You’ll have a plant test Monday
The plant system interaction homework
will count for next grading term
Anticipation Thoughts…(true or false?)
1. Thigmotropism is a plant’s response to
gravity.
2. Plants breathe
3. Plants need oxygen to survive
4. Singing helps plants grow
5. Plants produce glucose during
photosynthesis.
Cellular Energy
Essential Question: How are
photosynthesis and cellular
respiration related?
How is energy transformed in
living organisms?
• Energy :the ability to do work
• Most energy comes from the sun in
the form of light.
• All energy
that is not
used by
organisms
leaves the
Earth in the
form of
heat.
• Adenosine triphosphate (ATP) is the chemical
that cells use to store and release energy.
• The energy in ATP is stored in the bonds between
the elements.
How do plants make their own
food?
• To perform photosynthesis, plants need:
1. sunlight (energy source)
2. water
3. carbon dioxide
These are called the reactants.
• After photosynthesis, the plant has produced:
1. Glucose (molecule that the plant uses to
produce energy)
2. Oxygen (given off through the leaves)
These are called the products.
Draw this picture
The equation of photosynthesis is:
6CO2 + 6H2O + sunlight  C6H1206 + 6O2
carbon dioxide + water + energy  glucose + oxygen
Talk to your partner:
Where do plants take in carbon dioxide?
Where do plants take in water?
Photosynthesis occurs in an organelle in the leaves.
Chloroplasts: organelle where photosynthesis
takes place
Chlorophyll: pigment in chloroplasts, makes plants
green
How do animals get energy for
living?
• Cellular
respiration:
the process
that releases
energy (ATP)
by breaking
down glucose.
• Cellular respiration occurs in the mitochondria
of plant and animal cells.
• Cellular respiration makes 36 ATP molecules
• The remaining energy is lost as heat.
Mitochondria
Talk to you partner:
If humans do not make our own
food in photosynthesis, how do we
get nutrients to perform cellular
respiration?
The formula for cellular respiration is:
6O2 + C6H12O6  6CO2 + 6H2O + Energy
oxygen + glucose  carbon dioxide + water + ATP
Cellular respiration requires oxygen and
glucose and gives off carbon dioxide,
water, and energy.
Draw this
Draw this
Debrief:
Explain the relationship between
cellular respiration and
photosynthesis in terms of
matter.
What about energy?
Photosynthesis vs Cellular Respiration
Foldable
FRONT
Photosynthesis
Cellular
Respiration
Draw and color
a picture of the
chloroplast
(plant)
Draw and color
a picture of the
mitochondria
BACK
Venn Diagram
INSIDE
Photosynthesis
Definition
Cellular
Respiration
Definition
Analogy
Photosynthesis is
like………
AND PICTURE
illustrating your
analogy
Analogy
Cell Respiration is
like………..
AND PICTURE
illustrating your
analogy
Photosynthesis
Equation (words
and symbols)
Cellular Respiration
Equation (words
and symbols)
Let’s Race!
• I’m giving you a set of manipulatives.
• When I say “products of photosynthesis” for
example. The first table to correctly build it
earns a point. EACH person must be correct!
• Table that earns the most points wins (at life)!!